<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        ul{
            list-style-type: square;
        }

        li{
            background-color: aquamarine;
        }

        .test{
            background-color: antiquewhite;
        }
        #test1{
            background-color: black;
        }
    </style>
</head>
<body>
    <div>
        <ul>
            <li class="test"></li>
            <li></li>
            <li></li>
            <li id="test1"></li>
            <li></li>
            <li></li>
        </ul>
    </div>
</body>
</html>